Alloy 660 is a precipitation hardening alloy, which maintains superior strength at high temperatures up to 700℃, surpassing austenitic stainless steels. With a higher nickel content, Alloy 660 also includes such elements as titanium and aluminum for hardening. Age hardening is used to precipitate γ' phase [Ni3 (Al, Ti)] making this an extraordinarily strong metal at high temperatures. Alloy 660 is an excellent choice when high-temperature strength is required such as jet engines, gas turbines and turbo charger components.